/Engine/Source/Runtime/TypedElementFramework/Public/Elements/Framework/TypedElementQueryBuilder.h
Runs a subquery registered with the current query. The subquery index is in the order of registration with the query.
virtual [ITypedElementDataStorageInterface::FQueryResult](API\Runtime\TypedElementFramework\Elements\Interfaces\ITypedElementDat-_1\FQueryResult) RunSubquery ( int32 SubqueryIndex )